33 12 16.26 - 001-A - Response AAN-ANR Butterfly Valves - Garney ...

A8
External Interlocks
A9
Conditional Control
At
Torque Switch Bypass
36
Actuators are delivered with the
interlock facility disabled [OF] Refer to
the actuator wiring diagram or
publication E120E for interlock control
circuits.
To enable remote external interlocks
press the + or - key.
The display will change to [On].
PRESS THE KEY.
The displayed option will flash
indicating that it has been set.
Interlocks Disabled
Note: If interlocking is required in only
one direction, it will be necessary to
connect a link between the actuator
terminals associated with the other
direction.
Where a high level of safety integrity is
required, Conditional Control can be
configured. In this mode two discreet
signals are required for remote
operation. Remote control will be
conditional on both a control signal
(open or close) and the appropriate
interlock signal being applied
simultaneously. Failure of either or a
spurious signal will not cause operation.
Interlocks [A8] must be set [On].
Interlock signals are not required for
local operation.
The default setting for conditional
control is [OF]. To enable conditional
control press the + or - key.The display
will change to [On].
PRESS THE KEY.
The displayed option will flash
indicating that it has been set.
The default setting for Torque Switch
Bypass is [OF], the torque switches are
not bypassed during the unseating
movement.
To bypass the torque switches during
the unseating movement press the + or
- key.
The display will change to [On].
PRESS THE KEY.
The displayed option will flash
indicating that it has been set.
The torque switches will be bypassed
from closed limit to 5% open when
opening and from open limit to 95%
when closing. Bypassing the torque
switches makes torque in excess of
rated and up to actuator stall available
for unseating a ‘‘sticky’’ valve. Outside
these positions the torque setting will
revert to the values set for [tC], see
page 25 and [tO] page 26.
Conditional Control Off
Torque Switch Bypass Off